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Old 03-24-2026, 06:54 PM   #1
Shelbycsx
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Default 30-31 headlight wiring harness

Who makes the best quality headlight harness. Just purchased 2 and im not happy at all with them can't get the main harness on the 3 pin socket because the notches on the socket are too deep and the socket fits loose in the main headlight assembly.
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Old 03-24-2026, 09:15 PM   #2
ModelA29
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Default Re: 30-31 headlight wiring harness

Snyder's sells the one with the proper connectors for the headlights. Many makers sell them with the regular bullet connectors for the headlights and they don't work as well.
Also you can run into problems with the simple fact that repro parts don't always mesh well with other orig/repro parts and may require a little finessing to get them working together.
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Old 03-24-2026, 09:50 PM   #3
fourfords
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Default Re: 30-31 headlight wiring harness

I'm assuming you know that the Standard Model A has two sockets inside each headlight. The deluxe has just one socket inside each headlight and cowl lights as a part of the deluxe package.

So, its kind of important to know which style of headlight wiring set-up is appropriate.
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Old 03-25-2026, 02:31 PM   #4
CarlG
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Default Re: 30-31 headlight wiring harness

I generally buy all my wiring harnesses from Sacramento Vintage Ford. They make their own and are top notch.
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Old 03-27-2026, 12:10 PM   #5
rotorwrench
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Default Re: 30-31 headlight wiring harness

I think there is only one type of flat top terminal pin available unless someone has a corner on very old NOS parts. The original three slot pin retainer was bakelite so they are rare now days. The repro black plastic types may be problematic with the current pin fit but I haven't tried any yet. Even the stamped plug pieces are questionable but addage, "if there is a will, there is a way" fits here. I know the next time a fit up a set of headlamps, I'll have to deal with this problem. Your not the only one that has problems with this stuff.

If you have decent harnesses that just need the right flat top pins then you might try just replacing the pins. I've ground pins down to extract them without shortening a wire. If it isn't a length problem then just cut them off and install a pin that will work. his link is the type of connector pin I'm referring to. They require soldering.
https://www.snydersantiqueauto.com/p...6449&cat=41726
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Old 03-31-2026, 08:11 PM   #6
Shelbycsx
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Default Re: 30-31 headlight wiring harness

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Quote:
Originally Posted by rotorwrench View Post
I think there is only one type of flat top terminal pin available unless someone has a corner on very old NOS parts. The original three slot pin retainer was bakelite so they are rare now days. The repro black plastic types may be problematic with the current pin fit but I haven't tried any yet. Even the stamped plug pieces are questionable but addage, "if there is a will, there is a way" fits here. I know the next time a fit up a set of headlamps, I'll have to deal with this problem. Your not the only one that has problems with this stuff.

If you have decent harnesses that just need the right flat top pins then you might try just replacing the pins. I've ground pins down to extract them without shortening a wire. If it isn't a length problem then just cut them off and install a pin that will work. his link is the type of connector pin I'm referring to. They require soldering.
https://www.snydersantiqueauto.com/p...6449&cat=41726
I'm talking about the wiring harness inside the headlight not the main harness connecting going to it.
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Old 04-02-2026, 11:51 AM   #7
rotorwrench
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Default Re: 30-31 headlight wiring harness

That's a bulb pigtail more than a harness. The socket pigtails are available or just purchase a length of the wire and fix the old ones yourself.
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